Loading…
Story
synergy · 1
Exercise and sleep help each other: regular exercise helps you fall asleep faster and sleep better, and sleep is when the effects of training are actually built, so if you are short of sleep for long stretches, even the best training plan cannot turn into results.
cofactor · 5
Sweat is more than 99% water, and a liter of sweat carries off about 1 g of sodium, far less than an ordinary diet supplies, so plain water is enough for a session of an hour or less. Electrolytes are needed only for long, heavy sweating, exercise in the heat, or people with especially salty sweat. Exercise-associated hyponatremia is a real risk, driven mainly by drinking more than you sweat: if a headache keeps getting worse, or vomiting or confusion sets in after drinking a lot of plain water during long exercise, seek emergency care right away.
More training brings more fatigue. In a meta-analysis, across the studies it pooled, the more sets per muscle per week, the more muscle grew, and it did not locate a plateau. Muscle grows during recovery, so recovery capacity sets the ceiling on useful volume.
When you train strength and endurance together, the first limit you hit is usually not interference but your capacity to recover. Regular deload weeks, plus watching for changes in sleep and mood, are what let both kinds of training stay in the plan for the long run.
Scheduling a deload week every 4–8 weeks is common practice, and it is not slacking. One of its uses is to give slower-adapting tissues time: tendon and bone adapt more slowly than the heart and lungs, and more slowly than muscle, and injuries often happen in that gap.
In the first months back after a break, the body is rebuilding fast, so the two recovery variables, sleep and protein, matter as much as the training itself. Whether muscle cell nuclei stay behind during a layoff is still debated in humans; even if they do, rebuilding still takes raw material and time.
regulates · 1
The soreness that arrives a day or two after training (delayed-onset muscle soreness) starts with small injuries to muscle fibers from eccentric contractions, and the inflammation that follows makes pain nerves more sensitive; it usually peaks at 24–72 hours. It is not lactic acid building up: lactate is cleared within an hour of training. Repeating the same movement makes the soreness milder each time (the repeated bout effect), and being very sore does not mean the session was a good one.